Wire transmitting module

Abstract

A wire transmitting module is disposed in a wire electrical discharge machining (WEDM) apparatus which has a roller set for providing a wire electrod. The wire transmitting module comprises: a negative pressure generating device and a cylinder, being arranged for enabling the wire electrode to be drawn by the negative pressure of the negative pressure generating device so as to be sucked into the wire transmitting module automatically. When the diameter of the wire electrode is thinner than 0.1 mm, it may be too soft to be fed into the cylinder manually as it can easily be affected by airflow or static. Thus, by using the wire transmitting module for enabling the wire electrode to be sucked by the negative pressure and thus being fed into the cylinder, the electrode feeding efficiency can be greatly improved.

Description

technical field [0001] The invention relates to a cylinder, in particular to a wire module for sucking and transporting wires through a negative pressure generating device. Background technique [0002] Electrical discharge machining is mainly a thermal processing method that converts electrical energy into heat energy of the workpiece to rapidly melt the workpiece. That is to say, during electric discharge machining, the liquid generates a transitional arc discharge phenomenon in the extremely small gap between the electrode and the workpiece, and then generates heat on the workpiece. At this time, the molten part of the workpiece will melt into the processing liquid with the phenomenon of liquid gasification, and the workpiece will produce discharge marks due to the action of discharge. This action can be repeated to process the workpiece into the desired shape. [0003] Wire cutting EDM is to use the discharge between the electrode wire (usually refers to the brass wire)...

AI Technical Summary

Problems solved by technology

[0004] When using wire-cut electric discharge machining, since the current processing wire diameter is still more than 0.1 mm, there is no difficulty in manually inserting the electrode wire into the catheter, but the electrode wire with a wire diameter below 0.1 mm (such as 0.05 mm or 0.02 mm) But it is very soft, and it is very difficult to penetrate into the catheter without any fluid guidance. It is easy to stick to the catheter or other transmission mechanisms during transmission, and the threading fails. It is no longer possible to complete the threading by pure manual methods.

[0005] At present, a guide fluid is mostly given near the entrance of the electrode wire. The guide fluid is used to prevent the electrode wire from sticking to the inner wall of the catheter, and at the same time, the guide fluid is used to transmit the electrode wire downward. However, when using the guide fluid to transmit the electrode wire, it still needs Manually pass the electrode wire below the fluid inlet of the wire, so that the electrode wire can be sent down with the fluid of the wire, but because the electrode wire with a diameter below 0.1mm is too thin and soft, and the electrode wire needs to be sent In the process of reaching the air inlet, it is also easy to be pushed away from the air inlet due to the partial pressure of the wire fluid, so it is quite difficult to manually send the electrode wire to the air inlet, which increases the probability of wire feeding failure

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